How can I apply for date of birth correction in 10th certificate?

How can I apply for date of birth correction in 10th certificate?

I'm Nithianand passed 10th in the year of 2002...now i have a problem for taking passport and further due to unmatch in date of birth mentioned in birth certificate and 10th certificate...In birth certificate DOB is 17/04/1987..and in my 10th certificate as 17/07/1987..I enquired in school for correction they says it cant be corrected once it was recorded..i dont know what to do ...plz help me ....how can be corrected